Design And Experimental Study Of A Rapeseed Broadcast Spreader Of Screw-Drop Type

A small-scale rapeseed broadcast spreader of screw-drop type was developed in this study. The effect of process parameters on broadcast sowing performance of rapeseed was tested and investigated. The metering rate and spreading width of the broadcast spreader were adjustable. The metering rate linearly increased with the increase of screw auger revolution and the spreading width logarithmically increased with the increase of rotary disk revolution and height. Rotary disk revolution had the highest significant level of impact on distribution uniformity of rapeseed broadcast sowing of the broadcast spreader, and it was followed by screw auger revolution, rotary disk height and the spreader forward speed, sequentially. The optimal process parameters for distribution uniformity of rapeseed broadcast sowing were the rotary disk revolution 180 rpm, rotary blade height 800 mm, forward speed 2 km/h, and screw auger revolution 40 rpm.